1 #ifndef _LINUX_SCSI_H
2 #define _LINUX_SCSI_H
3
4 /*
5 * This header file contains public constants and structures used by
6 * the scsi code for linux.
7 */
8
9 /*
10 $Header: /usr/src/linux/include/linux/RCS/scsi.h,v 1.3 1993/09/24 12:20:33 drew Exp $
11
12 For documentation on the OPCODES, MESSAGES, and SENSE values,
13 please consult the SCSI standard.
14
15 */
16
17 /*
18 * SCSI opcodes
19 */
20
21 #define TEST_UNIT_READY 0x00
22 #define REZERO_UNIT 0x01
23 #define REQUEST_SENSE 0x03
24 #define FORMAT_UNIT 0x04
25 #define READ_BLOCK_LIMITS 0x05
26 #define REASSIGN_BLOCKS 0x07
27 #define READ_6 0x08
28 #define WRITE_6 0x0a
29 #define SEEK_6 0x0b
30 #define READ_REVERSE 0x0f
31 #define WRITE_FILEMARKS 0x10
32 #define SPACE 0x11
33 #define INQUIRY 0x12
34 #define RECOVER_BUFFERED_DATA 0x14
35 #define MODE_SELECT 0x15
36 #define RESERVE 0x16
37 #define RELEASE 0x17
38 #define COPY 0x18
39 #define ERASE 0x19
40 #define MODE_SENSE 0x1a
41 #define START_STOP 0x1b
42 #define RECEIVE_DIAGNOSTIC 0x1c
43 #define SEND_DIAGNOSTIC 0x1d
44 #define ALLOW_MEDIUM_REMOVAL 0x1e
45
46 #define SET_WINDOW 0x24
47 #define READ_CAPACITY 0x25
48 #define READ_10 0x28
49 #define WRITE_10 0x2a
50 #define SEEK_10 0x2b
51 #define WRITE_VERIFY 0x2e
52 #define VERIFY 0x2f
53 #define SEARCH_HIGH 0x30
54 #define SEARCH_EQUAL 0x31
55 #define SEARCH_LOW 0x32
56 #define SET_LIMITS 0x33
57 #define PRE_FETCH 0x34
58 #define READ_POSITION 0x34
59 #define SYNCHRONIZE_CACHE 0x35
60 #define LOCK_UNLOCK_CACHE 0x36
61 #define READ_DEFECT_DATA 0x37
62 #define MEDIUM_SCAN 0x38
63 #define COMPARE 0x39
64 #define COPY_VERIFY 0x3a
65 #define WRITE_BUFFER 0x3b
66 #define READ_BUFFER 0x3c
67 #define UPDATE_BLOCK 0x3d
68 #define READ_LONG 0x3e
69 #define WRITE_LONG 0x3f
70 #define CHANGE_DEFINITION 0x40
71 #define WRITE_SAME 0x41
72 #define READ_TOC 0x43
73 #define LOG_SELECT 0x4c
74 #define LOG_SENSE 0x4d
75 #define MODE_SELECT_10 0x55
76 #define RESERVE_10 0x56
77 #define RELEASE_10 0x57
78 #define MODE_SENSE_10 0x5a
79 #define PERSISTENT_RESERVE_IN 0x5e
80 #define PERSISTENT_RESERVE_OUT 0x5f
81 #define MOVE_MEDIUM 0xa5
82 #define READ_12 0xa8
83 #define WRITE_12 0xaa
84 #define WRITE_VERIFY_12 0xae
85 #define SEARCH_HIGH_12 0xb0
86 #define SEARCH_EQUAL_12 0xb1
87 #define SEARCH_LOW_12 0xb2
88 #define READ_ELEMENT_STATUS 0xb8
89 #define SEND_VOLUME_TAG 0xb6
90 #define WRITE_LONG_2 0xea
91
92 /*
93 * Status codes
94 */
95
96 #define GOOD 0x00
97 #define CHECK_CONDITION 0x01
98 #define CONDITION_GOOD 0x02
99 #define BUSY 0x04
100 #define INTERMEDIATE_GOOD 0x08
101 #define INTERMEDIATE_C_GOOD 0x0a
102 #define RESERVATION_CONFLICT 0x0c
103 #define COMMAND_TERMINATED 0x11
104 #define QUEUE_FULL 0x14
105
106 #define STATUS_MASK 0x3e
107
108 /*
109 * SENSE KEYS
110 */
111
112 #define NO_SENSE 0x00
113 #define RECOVERED_ERROR 0x01
114 #define NOT_READY 0x02
115 #define MEDIUM_ERROR 0x03
116 #define HARDWARE_ERROR 0x04
117 #define ILLEGAL_REQUEST 0x05
118 #define UNIT_ATTENTION 0x06
119 #define DATA_PROTECT 0x07
120 #define BLANK_CHECK 0x08
121 #define COPY_ABORTED 0x0a
122 #define ABORTED_COMMAND 0x0b
123 #define VOLUME_OVERFLOW 0x0d
124 #define MISCOMPARE 0x0e
125
126
127 /*
128 * DEVICE TYPES
129 */
130
131 #define TYPE_DISK 0x00
132 #define TYPE_TAPE 0x01
133 #define TYPE_PROCESSOR 0x03 /* HP scanners use this */
134 #define TYPE_WORM 0x04 /* Treated as ROM by our system */
135 #define TYPE_ROM 0x05
136 #define TYPE_SCANNER 0x06
137 #define TYPE_MOD 0x07 /* Magneto-optical disk -
138 * - treated as TYPE_DISK */
139 #define TYPE_MEDIUM_CHANGER 0x08
140 #define TYPE_COMM 0x09 /* Communications device */
141 #define TYPE_ENCLOSURE 0x0d /* Enclosure Services Device */
142 #define TYPE_NO_LUN 0x7f
143
144 /*
145 * standard mode-select header prepended to all mode-select commands
146 *
147 * moved here from cdrom.h -- kraxel
148 */
149
150 struct ccs_modesel_head
151 {
152 u_char _r1; /* reserved */
153 u_char medium; /* device-specific medium type */
154 u_char _r2; /* reserved */
155 u_char block_desc_length; /* block descriptor length */
156 u_char density; /* device-specific density code */
157 u_char number_blocks_hi; /* number of blocks in this block desc */
158 u_char number_blocks_med;
159 u_char number_blocks_lo;
160 u_char _r3;
161 u_char block_length_hi; /* block length for blocks in this desc */
162 u_char block_length_med;
163 u_char block_length_lo;
164 };
165
166 /*
167 * MESSAGE CODES
168 */
169
170 #define COMMAND_COMPLETE 0x00
171 #define EXTENDED_MESSAGE 0x01
172 #define EXTENDED_MODIFY_DATA_POINTER 0x00
173 #define EXTENDED_SDTR 0x01
174 #define EXTENDED_EXTENDED_IDENTIFY 0x02 /* SCSI-I only */
175 #define EXTENDED_WDTR 0x03
176 #define SAVE_POINTERS 0x02
177 #define RESTORE_POINTERS 0x03
178 #define DISCONNECT 0x04
179 #define INITIATOR_ERROR 0x05
180 #define ABORT 0x06
181 #define MESSAGE_REJECT 0x07
182 #define NOP 0x08
183 #define MSG_PARITY_ERROR 0x09
184 #define LINKED_CMD_COMPLETE 0x0a
185 #define LINKED_FLG_CMD_COMPLETE 0x0b
186 #define BUS_DEVICE_RESET 0x0c
187
188 #define INITIATE_RECOVERY 0x0f /* SCSI-II only */
189 #define RELEASE_RECOVERY 0x10 /* SCSI-II only */
190
191 #define SIMPLE_QUEUE_TAG 0x20
192 #define HEAD_OF_QUEUE_TAG 0x21
193 #define ORDERED_QUEUE_TAG 0x22
194
195 /*
196 * Here are some scsi specific ioctl commands which are sometimes useful.
197 */
198 /* These are a few other constants only used by scsi devices */
199
200 #define SCSI_IOCTL_GET_IDLUN 0x5382
201
202 /* Used to turn on and off tagged queuing for scsi devices */
203
204 #define SCSI_IOCTL_TAGGED_ENABLE 0x5383
205 #define SCSI_IOCTL_TAGGED_DISABLE 0x5384
206
207 /* Used to obtain the host number of a device. */
208 #define SCSI_IOCTL_PROBE_HOST 0x5385
209
210 /* Used to get the bus number for a device */
211 #define SCSI_IOCTL_GET_BUS_NUMBER 0x5386
212
213 /*
214 * Overrides for Emacs so that we follow Linus's tabbing style.
215 * Emacs will notice this stuff at the end of the file and automatically
216 * adjust the settings for this buffer only. This must remain at the end
217 * of the file.
218 * ---------------------------------------------------------------------------
219 * Local variables:
220 * c-indent-level: 4
221 * c-brace-imaginary-offset: 0
222 * c-brace-offset: -4
223 * c-argdecl-indent: 4
224 * c-label-offset: -4
225 * c-continued-statement-offset: 4
226 * c-continued-brace-offset: 0
227 * indent-tabs-mode: nil
228 * tab-width: 8
229 * End:
230 */
231
232 #endif
233
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